NAS

SOFTNER/SAND FILTER/ CARBON FILTER

WATER SOFTENER
Raw Water is termed “Hard Water” when it contains dissolved salts of Calcium & Magnesium. Temporary alkaline or carbonates of calcium & magnesium, Permanent non alkaline or noncarbonated hardness is caused by dissolved chlorides, sulphates or nitrates of calcium & magnesium, Softener removes hardness in water.
Process
The softening process consists of passing raw water containing hardness through a bed of cation resin in sodium form. The hardness ions Ca & Mg are taken up by resin and in exchange sodium ions are relinquished from the resin. Raw water will continue to get softened till the resin gets exhausted. Bringing back the resin to it original form is called regeneration. Softener resin is regenerated by sodium chloride (NaCl) of 10 -15% Concentration.
Requirement for Designing Softener: Hardness of Water, Flow Rate/Hour, Single Charge Softening.
WE OFFER ALL RANGES OF WATER SOFTNER

Specifications for softner

Parameters	Nassoft-15	Nassoft-30	Nassoft-55	Nassoft-80	Nassoft-105	Nassoft-140
Resin Qty.	15 Ltr	30 Ltr	55 Ltr	80 Ltr	105 Ltr	140 Ltr
OBR @ 100 ppm Hardness	7.5 M 3	15 M 3	28 M 3	40 M 3	55 M 3	80 M 3
Min. Working Pr.	2.0 Kg/cm²	2.0 Kg /cm²	2.0 Kg /cm²	2.0 Kg/cm²	2.0 Kg /cm²	2.0 Kg/cm²
Max. Working Pr.	4.0 Kg/cm²	4.0 Kg /cm²	4.0 Kg /cm²	4.0 Kg/cm²	4.0 Kg /cm²	4.0 Kg/cm²
Size & Type of Valve	Top Mounted MPV 3/4”	Top Mounted MPV 3/4”	Top Mounted MPV 3/4”	Top Mounted MPV 3/4”	Top Mounted MPV 1”	Top Mounted MPV 1”
Reagenerant Qty	Na Cl / 2.5 Kg	Na Cl / 5 Kg	Na Cl / 8.5 Kg	Na Cl / 12 Kg	Na Cl / 15 Kg	Na Cl / 20 Kg
Resin	Thermax/ ion exchange	Thermax/ Ion Exchange	Thermax/ Ion Exchange	Thermax/ Ion Exchange	Thermax/ Ion Exchange	Thermax/ Ion Exchange
Vessel	FRP	FRP	FRP	FRP	FRP	FRP
Max. Flow Rate.	2 m3 / Hr.	2 m3 / Hr.	2 m3 / Hr.	2 m3 / Hr.	3 m3 / Hr.	4 m3 / Hr.
Vessel Dia. & Height	205 x 645 mm	205 x 1120 mm	265 x 1245 mm	340 x 1175 mm	400 x 1130 mm	400 x 1470 mm

Parameters	Nassoft-200	Nassoft-250	Nassoft-330	Nassoft-480	Nassoft-750	Nassoft-1000
Resin Qty.	200 Ltr	250 Ltr	330 Ltr	480 Ltr	750 Ltr	1000 Ltr
OBR @ 100 ppm Hardness	100 M 3	125 M 3	165 M 3	240 M 3	375 M 3	500 M 3
Min. Working Pr.	2.0 Kg/cm²	2.0 Kg /cm²	2.0 Kg /cm²	2.0 Kg/cm²	2.0 Kg /cm²	2.0 Kg/cm²
Max. Working Pr.	4.0 Kg/cm²	4.0 Kg /cm²	4.0 Kg /cm²	4.0 Kg/cm²	4.0 Kg /cm²	4.0 Kg/cm²
Size & Type of Valve	Top Mounted MPV 1½”	Top Mounted MPV 1½”	Top Mounted MPV 1½”	Top Mounted MPV 1½”	Top Mounted MPV 1½”	Top Mounted MPV 1½”
Reagenerant Qty	Na Cl / 25 Kg	Na Cl / 30 Kg	Na Cl / 40 Kg	Na Cl / 60 Kg	Na Cl / 90 Kg	Na Cl / 120 Kg
Resin	Thermax Make	Thermax Make	Thermax Make	Thermax Make	Thermax Make	Thermax Make
Vessel	FRP	FRP	FRP	FRP	FRP	FRP
Max. Flow Rate.	3 m3 / Hr.	3 m3 / Hr.	4 m3 / Hr.	4-8 m3 / Hr.	5-10 m3 / Hr.	5-10 m3 / Hr.
Vessel Dia. & Height	16” x 65”	16” x 75”	20” x 69”	24” x 72”	30” x 72”	36” x 72”

Note :- Inlet Water should be colourless free from turbidity, oil, grease, Organic Matter. Treated water quality depends on Raw Water Analysis. ( FRP Vessels & MPV can also be used for Filter & DM Plants )

PRESSURE SAND FILTER
We offer durable pressure sand filters that are used for the removal of suspended solids & turbidity. The pressure sand filter is extremely robust method of removing suspended solids from water. The filtration medium comprised of multiple layer of sand having different size & specific gravity. As per the needs of customers, we can offer sand filters in various sizes and material apart from hand operated or fully automatically, Filter is used for separating water suspended solid for better operation of filter, suspended solid should be coagulated. The advantages of pressure filter are high speed of filtration, less space, low charge and prevent heat loss after the warm or hot lime process.
Pressure filters, which may be vertical or horizontal, have cylindrical steel shells and dished heads. The flow in pressure filters is downward. Usually sand or anthracite is the filter medium in a bed consisting of either one or two grades of sand or anthracite. A gravel bed supports the filter medium, prevents fine sand or anthracite from passing into the under drain system and distributes backwash water.
The water, which should be filtered, enters over the top of filter and pass from its bed then they collected at the bottom of filter. The suspended matter is strained out of the water and held in the voids between the filtering granules. The accumulation load of suspended matter in the bed causes an increasing loss of pressure during the filter run. When this loss reaches a predetermined limit, the filter is backwashed upward, discharging the suspended load out to the sewer.
We have various size of pressure sand filter plant

MODEL	VALVE	TOP / SIDE
15	¾” ( 20 NB )	TOP
30	¾” ( 20 NB )	TOP
60	¾” ( 20 NB )	TOP
80	¾” ( 20 NB )	TOP
100	1 ½” ( 40NB )	TOP
150	1 ½” ( 40NB )	TOP
200	1 ½” ( 40NB )	TOP/SM
250	1 ½” ( 40NB )	SIDE
330	1 ½” ( 40NB )	SIDE
450	1 ½” ( 40NB )	SIDE
750	1 ½” ( 40NB )	SIDE
1000	1 ½” ( 40NB )	SIDE

ACTIVATED CARBON FILTERS
Activated carbon filters are used for removing free chlorine, phenol, taste and odour as well as reduction COD/ BOD. The specially designed filters are made from FRP closed vessel fitted with multi port valves and are operated under pressure. The water is passed through the under bed media & granular activated carbon layer. These filters have a back flushing arrangement, which easily flushes away the deposited impurity at carbon granules.
Activated carbon filter, for removal of free chlorine, phenol, taste and odour as well as reduction COD / BOD. Granular Activated Carbon is a well establishing & proven technology for the removal of taste, odours and gases from water. It is extremely effective in the removal of many Volatile Organic Compounds (VOC) and other Petroleum-based contaminants.
The Ultra Safe Filters use Granular Activated Carbon, manufactured from hard coconut shell having Iodine content of 900-1000 ppm, whose extraordinary molecular structure adsorbs much more molecules of contaminant molecules that adhere to its surface, through absorption and adsorption.
Special Features

Filtration Plants are available in different models, for different applications such as Sand Filter, Activated Carbon Filter, Sand cum Carbon Filter & Iron Removal Filter.
The materials of construction are MS/SS304/SS316/MSRL/FRP.
Flow rate Capacity: 1,000 LPH to 1, 00,000 LPH.
Unique pipeline design in SS filters involves no welded joints.
Backwashing facility for cleaning the system.
Low-maintenance and operating costs.

We have various size as follows :-

MODEL	VALVE	TOP / SIDE
15	¾” ( 20 NB )	TOP
30	¾” ( 20 NB )	TOP
60	¾” ( 20 NB )	TOP
80	¾” ( 20 NB )	TOP
100	1 ½” ( 40NB )	TOP
150	1 ½” ( 40NB )	TOP
200	1 ½” ( 40NB )	TOP
250	1 ½” ( 40NB )	SIDE
330	1 ½” ( 40NB )	SIDE
450	1 ½” ( 40NB )	SIDE
750	1 ½” ( 40NB )	SIDE
1000	1 ½” ( 40NB )	SIDE

DEMINERALIZATION PLANT

Ion exchange technology is used to remove salts (cations and anions) from the water Soluble chemical compounds, when dissolved in water, become ionized; that is their molecules dissociate into positively and negatively charged components called ions. Consider common table salt, sodium chloride. In its solid form, this compound consists of one sodium atom (Na) and one chlorine atom (Cl) tightly coupled together (NaCl). When dissolved in water, however, the compound splits into two ions, Na and Cl.

Ion Exchange
A process in which Contaminant ions are exchanged from water is called ion exchange. This process occurs in ion exchange resin Initially, resin is loaded with hydrogen (H ) ion for cations and hydroxide (OH-) ion for anions. As water passes through the resin, the contaminant ions in the water displace the loaded ions from the sites on the resin. This is because the resin has a greater affinity for the contaminant ions. Affinity for most resins is based loosely on ionic size and charge
Regeneration
Over a period of time most of the cation resin gets converted into Ca, Mg, Na form and it has no Hydrogen Ions (H ) to replace Ca, Mg, Na ions and the anion resin gets converted into Cl, SO4, SiO2 form and it has no Hydroxyl Ions (OH-) to replace Cl, SO4, SiO2 ions.. This is called the resin exhaustion or end of service cycle. The exhausted resin has to be brought back into Hydrogen (H ) Hydroxyl (OH-) form to continue the process and use it again and again.
The procedure of converting exhausted resin into Hydrogen (H ) Hydroxyl (OH-) form is called regeneration
Separate Bed DM Systems
Ion exchange occurs across at least two different columns. The first is a cation column, which is filled with resin loaded with positive hydrogen ions (H ). As water passes through this column, the positively charged impurities in the water are exchanged for the hydrogen ions A similar exchange takes place in the second column, the anion column. This column is filled with resin loaded with negative hydroxide ions (OH-). As the now cation-free water from the cation column passes through, any negatively charged contaminants are removed from the water and replaced by hydroxide ions from the resin. The water now has a neutral pH. hydroxide [OH-] and hydrogen [H ] ions exchanged in the columns combine, forming water [H2O)
Mixed Bed Systems
In a Mixed Bed System water is purified by removing all ions in one pass through an ion exchange bed. The bed consists of cation and anion resins in mixed condition, so that ions are actually removed in the same two step ion exchange process. All the traces of Cations and Anions of the dissolved solids and silica in the water are replaced by Hydrogen ion (H) and Hydroxyl Ion (OH-) respectively. We get very high purity demineralized water at the outlet of the MB.

Specifications for DM Plants

MODELS	NAS DM 30	NAS DM 60	NAS DM 80	NAS DM 100
Resin Qty.	30 Ltr	60 Ltr	80 Ltr	100 Ltr
OBR @ 100 ppm ionic Load	12,000 ltrs	24,000 ltrs	32,000 ltrs	40,000 ltrs
Min. Working Pr.	2.0Kg/cm²	2.0 Kg /cm²	2.0 Kg /cm²	2.0 Kg/cm²
Max. Working Pr.	4.0Kg/cm²	4.0 Kg /cm²	4.0 Kg /cm²	4.0 Kg/cm²
Vessel	FRP	FRP	FRP	FRP
Resin Make	Thermax/ Ion Exchange	Thermax/ Ion Exchange	Thermax/ Ion Exchange	Thermax/ Ion Exchange
Reagenerant Qty Acid(30%) & Alkali(98%)	HCL / 9 Kg NaOH / 3 Kg	HCL / 18 Kg NaOH / 6 Kg	HCL / 24 Kg NaOH / 8 Kg	HCL / 30 Kg NaOH / 10 Kg
Type of Valve	20NB	20NB	20 or 25 NB	25 or 40NB TM
Max. Flow Rate. m3/Hr	1.5 m3 / Hr.	1.5 m3 / Hr.	1.5 m3 / Hr.	2.5 m3 / Hr.

MODELS	NAS DM 150	NAS DM 200	NAS DM 250	NAS DM 330
Resin Qty.	150 Ltr	200 Ltr	250 Ltr	330 Ltr
OBR @ 100 ppm ionic Load	60,000 ltrs	80,000 ltrs	1 Lacs ltrs	1.32 Lacs ltrs
Min. Working Pr.	2.0 Kg/cm²	2.0 Kg /cm²	2.0 Kg /cm²	2.0 Kg/cm²
Max. Working Pr.	4.0 Kg/cm²	4.0 Kg /cm²	4.0 Kg /cm²	4.0 Kg/cm²
Vessel	FRP	FRP	FRP	FRP
Resin Make	Thermax/ Ion Exchange	Thermax/ Ion Exchange	Thermax/ Ion Exchange	Thermax/ Ion Exchange
Reagenerant Qty Acid(30%) & Alkali(98%)	HCL / 45 Kg NaOH / 15 Kg	HCL / 60 Kg NaOH / 20 Kg	HCL / 75 Kg NaOH / 25 Kg	HCL / 100 Kg NaOH / 35 Kg
Type of Valve	25 or 40 NB TM	40 NB TM/SM	40 NB SM	40 NB SM
Max. Flow Rate. m3/Hr	3 m3 / Hr.	3 m3 / Hr.	3-4 m3 / Hr.	3-6 m3 / Hr 4-8 m3 /Hr.

MODELS	NAS DM 500	NAS DM 750	NAS DM 1000
Resin Qty.	500 Ltr	750 Ltr	1000 Ltr
OBR @ 100 ppm ionic Load	2 Lacs ltrs	3 Lacs ltrs	4 Lacs ltrs
Min. Working Pr.	2.0Kg/cm²	2.0 Kg /cm²	2.0 Kg /cm²
Max. Working Pr.	4.0Kg/cm²	4.0 Kg /cm²	4.0 Kg /cm²
Vessel	FRP	FRP	FRP
Resin Make	Thermax	Thermax	Thermax
Reagenerant Qty Acid(30%) & Alkali(98%)	HCL / 150 Kg NaOH / 50 Kg	HCL / 225 Kg NaOH / 75 Kg	HCL / 300 Kg NaOH / 100 Kg
Type of Valve	40 NB SM	40 NB SM	40 NB SM
Max. Flow Rate. m3/Hr	4 m3 / Hr.	2.0Kg/cm.	2.0 Kg /cm².

Note :- Inlet Water should be colourless free from turbidity, oil, grease, Organic Matter. Treated water quality depends on Raw Water Analysis.

R.O. PLANT

REVERSE OSMOSIS PLANT
The NERO ACQUA SYSTEM desalination unit uses the reverse osmosis process to remove dissolved solids from brackish or saline water. The process is continuous and requires no regeneration chemicals. The unit is factory tested and easy to install and operate. Treated water quality is continuously monitored by a Total dissolved Salt indicator.
Reverse Osmosis System
Exploding population, industrial effluents, and reckless deforestation have depleted natural sources of pure water. Dependence on erratic monsoons to replenish these sources has proved extremely inadequate & expensive. Good management of existing water resources and untapped sources, along with recovery and recycling of Industrial effluents & municipal waste water, seem absolutely essential for the future of mankind.
Conventional Methods
Forced by the demand for more and better quality water, conventional methods of Water Treatment are becoming more expensive and inefficient, more so if the input water is brackish.
Principle of Reverse Osmosis
Reverse Osmosis system uses semi-permeable spiral wound membrane to separate and remove dissolved solids, organics, pyrogens, submicron colloidal matter and bacteria from water. Feed water is delivered under high pressure through permeators, where water permeates through the minute pores of the membrane and is delivered as purified product water.
Removal of Impurities
Impurities in the water are concentrated in the reject stream and flushed to drain.
Output Range
The system is available in a wide range of models for treating water quality of varying Total Dissolved Solids (TDS) with different flow rates.
Purity Standards Maintained
Maximum purity is attained by reducing

a) 95% - 99% of the TDS
b) 99% of the organics (including pyrogens) and bacteria.
Advantages

Hygienic drinking water for domestic use.
Reduces the cost of de-ionized water for boiler-feed and process.
Ultra pure water for Electronic Industries.
To meet specific requirements in process industries
Cooling Tower blow down water recovery.
To remove fluorides from water, thus controlling fluorosis (a crippling disease).
Conversion of brackish/sea water into potable water.

Useful for Industries such as Food, Beverages, Pharmaceutical, Micro-Electronic, Aquaculture, Hospitals, Hotels, Mineral Water etc.
We have various size of R.O. Plant

MODEL	DELIVERY
RO PLANT 250 LPH	1 WEEKS
RO PLANT 500 LPH	1 WEEKS
RO PLANT 750 LPH	1 - 2 WEEKS
RO PLANT 1000 LPH	1 - 2 WEEKS
RO PLANT 2000 LPH	1 - 2 WEEKS
RO PLANT 3000 LPH	1 - 2 WEEKS
RO PLANT4000 LPH	2 - 3 WEEKS
RO PLANT 5000 LPH	2 - 3 WEEKS
RO PLANT 5500 LPH	3 - 4 WEEKS
RO PLANT 10,000 LPH	3 - 4 WEEKS

MIXED BED PLANT

Mixed bed demineralizer plant embodies a single column unit in which strong cation & strong anion resins are intimately mixed together. Water passing through the column comes repeatedly in contact with these resins and is thus in effect subjected almost infinite number of demineralizing stages. Demineral water of extreme purity is produced - Purity that can not be produced by any other commercial method.
Mixed bed resins are regenerated with acid and alkali but the ion exchange resin must be separated before this can be done.

1.1 Quality of water
A typical quality of mixed bed treated water is as follows

Conductivity at 25OC	<1 micro siemens /cm
Silica max	0.05 ppm as CaCO3
Total electrolyte	<0.5. mg/ litre
Total hardness	Nil
pH	6.8 ---7.2

Feed water Quality
Raw water or feed water to Mix bed must be free from turbidity & organic matter, Heavy metals, free chlorine and oil. The minimum inlet pressure required is 2 kg /cm2. If raw water is being directly fed as feed water to mixed bed then the raw water TDS should not be more than 50 ppm.
We have various model :-

MODEL	VALVE	TOP / SIDE
15	¾” ( 20 NB )	TOP
30	¾” ( 20 NB )	TOP
60	¾” ( 20 NB )	TOP
80	¾” ( 20 NB )	TOP
100	1 ½” ( 40NB )	TOP
150	1 ½” ( 40NB )	TOP
200	1 ½” ( 40NB )	TOP
250	1 ½” ( 40NB )	SIDE

Specifications for softner

Specifications for DM Plants

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